Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 02.07.2025 06:18

Head injury
Fever
Charles Bonnet syndrome
Narcolepsy
Parkinson's disease
Affective disorders
Some of those things on the list are very very rare cases but I just wanted to cover everything (or almost everything).
Seizures
Delirium tremens
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Brain Tumors
Stress
Alcohol
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Dementia with Lewy bodies
Dementia and drug use cause paranoia. That is very common. Some of other things that can include delusions and/or hallucination can be:
⁉️sources from my experiences and internet research ⁉️
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Migraines
PTSD
Hallucinogen use
Alzheimer's disease,
Withdrawal from benzodiazepines
Alcohol withdrawal
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Grief (yes, sadly)
Infection
Mental disorder
Bipolar disorder
Sleep disorders
Pharmaceutical drug (abuse or side effects)